The features of this track and field nail shoes are : air permeable cloth, wear resistant steel nails, wear resistant shoelaces, strengthening stability, heel protection, antiskid design. 1 ? Mesh ventilation design : Using elastic permeable mesh, car-like diversion heat dissipation system, synchronous ventilation in movement, feet like engine high-speed movement, still keep the shoes clean and comfortable. 2 ? Convenience : Ergonomics shoes design, all-round close feet, sock foot feel experience, with better portability. 3? Scientific soles : suitable for artificial grassland, plastic runway, cinder and sandy land. 4?Scientific : Sci-tech wear-resistant alloy running nails, shoes head double nails parallel design, strengthen the front grip effect, shark teeth enhance stability to prevent rollover, heel triangular pyramid particles strengthen anti-skid. 5?Notice : our shoes’size is converted to US size according to the feet length (cm) -18+0.5. Men and women have the same size. The size chart is mark the length of feet wear(mm),Please buy according to the suitable size. the packing and shoes mark the mm isn't as same as this size chart,please to try after you receive the shoes. 6?The shoes come with a drawstring pocket, a nail remover, and a pack of spare nails. The sole nails are not tightened at the time of delivery, only to ensure that they will not fall off during transportation. Please tighten the nails before wearing them!✓ Guaranteed: Our shoe sizes are converted to US universal sizing based on insole length (cm) -18+0.5. Men's size is one size smaller than normal size, and women's size is one size larger than normal size. This is a size 6 (foot length is suitable for 23-23.5cm, i.e. 5.5 for men, 6.5 for women), please ignore the label on the shoe, the label on the shoe is a Chinese size, the size is not accurate, we will shipped it according to the size that suits your foot length Size. ✓ Package: Pair of shoes with 6 loosely fitted spikes pre-installed (Requires Tightening). Extra spikes, tools for spike replacement. Drawstring bag. ✓ Ideal for short-distanced runners. Works on grass, clay, cinder and tarmac. ✓ Reduces impact on landing. Heavy duty rubber sole for maximum wear-resistance. Anti-skid, high grip, effectively improving overall speed and control. ✓ Rubber sole,Lightweight & Highly breathable Upper made from mesh, improved durability and superior fit. Rubber sole. . breathable mesh.Best Sellers Rank: See Top 100 in Clothing, Shoes & Jewelry. : B09JM9WWHT. Date First Available: October 16, 2021. Department: mens.